John Moffitt wasn't unhappy with a lack of playing time in Denver. He quit the NFL because he'd lost his love for the game and was tired of risking his health, according to The Associated Press.
The AP reports the third-year guard from Wisconsin called the Broncos from his home in Seattle this week to notify them he wouldn't be returning to the team following its bye.
Then he announced on Twitter that he was calling it a career, saying, "Football was fun but my head hurts-haha kidding roger goodell. I'm on to new things, thanks to everyone along the way!!!"
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